Seiko Cal. 6636 - 636

The 6636-636 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6636 caliber with 24j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-02907b59c40a]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1992

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